ESP8266 Client Probleme

/*--------------------------------------------------

HTTP 1.1 Webserver as AccessPoint for ESP8266 

for ESP8266 adapted Arduino IDE

by Stefan Thesen 08/2015 - free for anyone

Does HTTP 1.1 with defined connection closing.

Handles empty requests in a defined manner.

Handle requests for non-exisiting pages correctly.

This demo allows to switch two functions:

Function 1 creates serial output and toggels GPIO2

Function 2 just creates serial output.

Serial output can e.g. be used to steer an attached

Arduino, Raspberry etc.

--------------------------------------------------*/

#include <ESP8266WiFi.h>

const char* ssid = "ESP-Accesspoint";

const char* password = "12345678";  // set to XX for open access point w/o passwortd

unsigned long ulReqcount;

// Create an instance of the server on Port 80

WiFiServer server(80);

void setup() 

{

  // setup globals

  ulReqcount=0; 

  // prepare GPIO2

  pinMode(2, OUTPUT);

  digitalWrite(2, 0);

  // start serial

  Serial.begin(9600);

  delay(1);

  // AP mode

  WiFi.mode(WIFI_AP);

  WiFi.softAP(ssid, password);

  server.begin();

}

void loop() 

{ 

  // Check if a client has connected

  WiFiClient client = server.available();

  if (!client) 

  {

    return;

  }

  // Wait until the client sends some data

  Serial.println("new client");

  unsigned long ultimeout = millis()+250;

  while(!client.available() && (millis()<ultimeout) )

  {

    delay(1);

  }

  if(millis()>ultimeout) 

  { 

    Serial.println("client connection time-out!");

    return; 

  }

  // Read the first line of the request

  String sRequest = client.readStringUntil('\r');

  //Serial.println(sRequest);

  client.flush();

  // stop client, if request is empty

  if(sRequest==XX)

  {

    Serial.println("empty request! - stopping client");

    client.stop();

    return;

  }

  // get path; end of path is either space or ?

  // Syntax is e.g. GET /?pin=MOTOR1STOP HTTP/1.1

  String sPath=XX,sParam=XX, sCmd=XX;

  String sGetstart="GET ";

  int iStart,iEndSpace,iEndQuest;

  iStart = sRequest.indexOf(sGetstart);

  if (iStart>=0)

  {

    iStart+=+sGetstart.length();

    iEndSpace = sRequest.indexOf("X",iStart);

    iEndQuest = sRequest.indexOf("?",iStart);

    // are there parameters?

    if(iEndSpace>0)

    {

      if(iEndQuest>0)

      {

        // there are parameters

        sPath  = sRequest.substring(iStart,iEndQuest);

        sParam = sRequest.substring(iEndQuest,iEndSpace);

      }

      else

      {

        // NO parameters

        sPath  = sRequest.substring(iStart,iEndSpace);

      }

    }

  }

   ///////////////////////////////////////////////////////////////////////////////

  // output parameters to serial, you may connect e.g. an Arduino and react on it

  ///////////////////////////////////////////////////////////////////////////////

  if(sParam.length()>0)

  {

    int iEqu=sParam.indexOf("=");

    if(iEqu>=0)

    {

      sCmd = sParam.substring(iEqu+1,sParam.length());

      Serial.println(sCmd);

    }

  }

.......

 //////////////////////

    // react on parameters

    //////////////////////

    if (sCmd.length()>0)

    {

      // write received command to html page

      sResponse += "Kommando:" + sCmd + "<BR>";

      // switch GPIO

      if(sCmd.indexOf("FUNCTION1ON")>=0)

      {

        digitalWrite(2, 1);

      }

      else if(sCmd.indexOf("FUNCTION1OFF")>=0)

      {

        digitalWrite(2, 0);

      }

    }

........

#include <ESP8266WiFi.h>

#include <ESP8266HTTPClient.h>

const char* ssid = "ESP-Accesspoint";

const char* password = "12345678";

int i=1;

void setup (){

Serial.begin(115200);

WiFi.begin(ssid, password);

 while (WiFi.status() != WL_CONNECTED) {

delay(1000);

Serial.println("Connecting..");

}

}

void loop() {

if(WiFi.status()== WL_CONNECTED){   //Check WiFi connection status

Serial.println("Connected!");

HTTPClient http;  //Declare an object of class HTTPClient

if(i==1){

  i=0;

  http.begin("http://192.168.4.1:80/?pin=FUNCTION1ON");  //Specify request destination

  Serial.println("i=1");

}

else{

  i=1;

  http.begin("http://192.168.4.1:80/?pin=FUNCTION1OFF");  //Specify request destination

  Serial.println("i=0");

}

int httpCode= http.GET();                                                                   //Send the request

if(httpCode>0){    //Check the returning code

String payload = http.getString();   //Get the request response payload

Serial.println(payload);                     //Print the response payload

}

http.end();   //Close connection

}

delay(5000);    //Send a request every 30 seconds

}